Introduction ========== FAIRLinked is a software package developed to support the FAIRification of materials science data, ensuring alignment with the principles of Findability, Accessibility, Interoperability, and Reusability. It is built around MDS-Onto,an ontology designed to capture the semantics, structure, and relationships inherent to materials data, thereby enabling integration, sharing, and reuse across diverse research workflows. This tool is actively developed and maintained by the **SDLE Research Center at Case Western Reserve University** and is used in multiple federally funded projects. This work was supported by: * U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE) under the Solar Energy Technologies Office (SETO) — Agreement Numbers **DE-EE0009353** and **DE-EE0009347** * Department of Energy (National Nuclear Security Administration) — Award Number **DE-NA0004104** and Contract Number **B647887** * U.S. National Science Foundation — Award Number **2133576**